RU122080U1 - FLEXIBLE CONTAINER INSIDE - Google Patents

Abstract

 1. The inner liner of a flexible container, characterized in that it is made of a one-piece plastic sleeve material with the formation of walls and the formation of a bottom seam in the lower part of the liner, while the bottom seam of the liner has a curved shape, ensuring the formation of bevels in the corners of the liner. ! 2. The inner liner of the flexible container according to claim 1, characterized in that the bottom seam of the liner has a trapezoidal shape. ! 3. The inner liner of the flexible container according to claim 1, characterized in that the bevels of the liner have a radial shape.

Description

The utility model relates to the elements of means of storage and transportation of bulk materials and can be used for storage and transportation, in particular, of powder, granular, grain and similar materials listed.

The prior art solutions are known that are relatively close to this utility model.

So from the prior art, the inner liner of a flexible container is known, which is part of a container containing an outer shell and an inner liner of flexible plastic material located inside it. The liner has at least one suspension means attached to the outer shell, made in such a way that it forms a ventilation channel for removing air from the liner, while the liner has such dimensions and shape, and the suspension means is attached to the outer shell in this orientation that when filling the container, the liner corresponds to the internal dimensions of the outer shell (RU 2065389, B65D 30/26, 08/20/1996).

The prior art similar solutions are disclosed in the foreign patent literature, in particular, descriptions of inventions: US 2008080792 (A1), B65D 30/26, 03/03/2008; EP 2186741 A1, B65D 30/26, 11/14/2008; WO 2005094169 (A2), B65D 30/26, 10/13/2005, etc.

Also known from the prior art is a rectangular rectangular inner liner of a flexible container (see FIG. 3), including a load-carrying shell, a protective shell with a through hole with hermetically sealed edges, an inner liner, a lifting loop, which is the same for the load-bearing and protective shell. According to this decision, notches are made in the upper edge of the protective shell, dividing it into parts for the loading hole and the lifting loop, and the edges of these notches are hermetically fastened. In the upper edge of the load-bearing shell, vertical notch is performed to organize the lifting loop, then the formed load-bearing shell and the liner are placed in the protective shell, the corresponding parts of the shells and the liner are combined, a single loop is formed by fastening together the parts of the load-bearing and protective shells. The container allows vertical loading of bulk materials into it, transportation and storage of bulk cargo in any weather conditions, eliminates the loss of cargo due to the lack of spraying of cargo. (RU 2256593, IPC 8 В65D 88/16, В65D 33/00, July 20, 2005) (the closest analogue).

One of the drawbacks of the closest analogue is that during inflation (prior to filling the container) and filling the container with the product (feed material), free cavities are formed in the corners of the bottom of the container between the liner and the load-carrying shell, which often leads to a violation of the stability of the container filled with the product and / or to fit the liner.

This is primarily due to the fact that the shape of the liner in the lower part in a swollen state does not correspond to the shape of the container shell filled with the product. As a result, the liner does not fit snugly against the load-bearing shell in the corners of the bottom of the container, which contributes to the emergence of free cavities between the load-bearing shell and the liner.

The objective of the utility model is to eliminate the above technological problems.

The technical result of the utility model is to increase the strength characteristics of the liner of the flexible container, which is achieved by improving the function of its disclosure (expansion) inside the load-carrying shell, as well as by improving its design, which reduces / eliminates its rupture / damage when loading the transported material into the container.

In addition, the technical result is manifested in an increase in the filling of the flexible container with the loaded material due to a more rational and uniform opening (expansion) of the liner in the load-bearing shell, as well as in increasing the stability of the flexible container, which is also provided by a more rational and uniform filling of the flexible container with the loaded material.

This problem is solved due to the fact that the inner liner of the flexible container, according to the claimed solution, is made of a one-piece plastic sleeve material with the formation of walls and the formation of a bottom seam in the lower part of the liner, while the bottom seam of the liner has a curved shape, which ensures the formation of bevels in the corners of the liner .

According to one embodiment of the utility model, the bottom seam of the liner is trapezoidal. However, the bevels of the liner may have a radial shape.

Due to the use of a plastic one-piece sleeve material in the manufacture of an insert, it becomes possible to carry out the construction disclosed above. This circumstance leads to the fact that the material loaded into the container is more evenly distributed over the entire volume of the liner, pressing it tightly against the walls of the load-bearing shell, especially in places such as the lower corners of the flexible container.

The foregoing reduces the likelihood of destruction of the inner liner for the above reasons and increases its reliability.

In addition, an increase in the filling capacity of the container is achieved, as well as an increase in its stability during transportation (increase in resistance to falling, capsizing) and storage.

The utility model is illustrated by the following graphic materials, which in no way limit all possible options for its implementation.

Figure 1 - General (schematic) view of a flexible container with analogues placed inside its liner. Figure 2 - General (schematic) view of the liners (2 options) for analogues. Figure 3 - General (schematic) view of the liners made according to the utility model (trapezoidal execution of the bottom seam). Figure 4 is a General (schematic) view of the liners made according to the utility model (radial execution of bevels). In Fig.5 and Fig.6 is a General (schematic) view of a flexible container with a liner placed inside it and made according to a utility model with trapezoidal execution of the bottom seam.

In Fig. 1, Fig. 6: 1 - load-bearing shell, 2 - liner, 3 - liner wall (front side), 4 - bottom seam, 5 - trapezoidal bottom seam, 6 - liner bevels (straight), 7 - liner bevels radial shape.

The following is an example of the implementation of models, in no way limiting all possible options for their implementation.

On a fairly common and well-known technological equipment, the future liner, made of a flat-folded plastic one-piece sleeve material, is unwound from a roll.

After that, the material is moved along the conveyor. At a certain technological site, the movement of the conveyor is stopped using specialized equipment, for example, the so-called thermal knives, they exert impact (pressure) on the surface of the sleeve material using temperature (sharp heating - sharp cooling) of the impact tools - thermal knives.

After such an impact on the plastic tubular material, it is melted with the simultaneous formation of the bottom seam (5) of the liner.

The bottom line of the seam (5) of the liner is made curved due to the use, for example, of thermal knives having a curved shape.

After this operation, the liner moves further along the conveyor. If necessary, in the future, other elements of the liner are performed, after which it is ready for use.

An insert is used, for example, as follows.

An internal liner (2), made in accordance with the claimed utility model with a bottom seam (5), for example, of a trapezoidal shape, is placed in the load-carrying shell (1) of a flexible container, made, for example, from a sufficiently dense polymer material.

After that, the transported material is fed into the container, which is evenly distributed over the entire volume of the liner (2), thereby sufficiently tightly pressing it to the walls of the load-carrying shell (1), especially in places such as the lower corners of the flexible container.

After that, if there is such a need, an external protective shell is put on the load-bearing shell (1), which can also be made of a polymeric material.

The implementation of the described utility model achieves a significant increase in the operational characteristics of the liner.

Due to the liner and its bottom seam disclosed in the description, the load material when it is placed in the container is more evenly distributed throughout the container, tightly pressing the liner against the walls of the load-bearing shell, especially in places such as the lower corners of a flexible container, which reduces the likelihood of destruction internal liner for the above reasons and increases its reliability.

In addition, when using the utility model, an increase in the filling capacity of the container is achieved (due to a more complete opening (expansion) of the liner in the load-bearing shell), as well as an increase in its stability during transportation (increase in resistance to falling, capsizing) and storage.

Claims (3)

1. The inner liner of the flexible container, characterized in that it is made of a one-piece plastic bag material to form a bottom wall and form a seam at the bottom of the liner, wherein the liner bottom seam has a curved shape which provides the bevel formation of the insert in the corners. 2. The inner liner of the flexible container according to claim 1, characterized in that the bottom seam of the liner has a trapezoidal shape. 3. The inner liner of the flexible container according to claim 1, characterized in that the bevels of the liner have a radial shape.